Get interface index from kernel for wificond

This CL adds the interface index query to interface name query.

With interface index wificond can assign scan request to specific
interface and ignore scan result from uninteresting interfaces.

BUG=30808053
TEST=compile, unit tests, integration tests

Change-Id: I2a6333dcad4e9faadb7793501762602017125865

1 files changed, 2 insertions, 0 deletions

diff --git a/ap_interface_impl.h b/ap_interface_impl.h
index 655bcc7..851f492 100644
--- a/ap_interface_impl.h
+++ b/ap_interface_impl.h
@@ -38,6 +38,7 @@ class ApInterfaceBinder;
 class ApInterfaceImpl {
  public:
   ApInterfaceImpl(const std::string& interface_name,
+                  uint32_t interface_index,
                   std::unique_ptr<wifi_system::HostapdManager> hostapd_manager);
   ~ApInterfaceImpl();
 
@@ -55,6 +56,7 @@ class ApInterfaceImpl {
 
  private:
   const std::string interface_name_;
+  const uint32_t interface_index_;
   const std::unique_ptr<wifi_system::HostapdManager> hostapd_manager_;
   const android::sp<ApInterfaceBinder> binder_;